2018 HA1
ephemeris	date	magn	radius	delta	ra	dec	elong	phase
Today	10 Aug 2026	25.9	1.546 AU	2.268 AU	07h11m	+00°26'	34.7°	21.9°

The interactive orbit chart above shows the body's path through the solar system and its position at the given date. Green and blue lines are shown perpendicular to the ecliptic plane: Green if the path is above the ecliptic plane, blue if it is below. (Left-click and drag to rotate the view; Right-click and drag to move the view; Use scroll wheel to zoom in our out.)

The orbital elements of 2018 HA1 are:

            e (Eccentricity)                : 0.4187368
            a (Semimajor axis)              : 1.3276879
            i (Inclination)                 : 37.69619
            Ω (Longitude of ascending node) : 210.94238
            ω (Argument of perihelion)      : 108.79767
            M (Mean anomaly)                : 282.24560
            Epoch                           : 2025 Nov 21

            L (Longitude of perihelion)     : 144.21857
            B (Latitude of perihelion)      : 35.37039
            P (Orbital period in years)     : 1.53            
        

The light curve chart below shows the estimated development of the minor planet's magnitude.

The all-sky chart below shows the path of the minor planet over the same period as the light curve. The current position is marked yellow.

The following chart shows the path of the minor planet in the next few days. The field of view is optimized for (~10x50) binoculars and finderscopes.

Ephemerides:

Date       Time       RA (2000)    DEC (2000)    delta   radius  elong  phase   PA    magn
2026-08-10 00:00 UT   07 11 49.4   +00 26 58     2.268    1.546   34.7   21.9   242   25.9 
2026-08-10 07:07 UT   07 12 31.4   +00 22 43     2.268    1.547   34.8   21.9   242   25.9 
2026-08-11 00:00 UT   07 14 11.0   +00 12 35     2.268    1.551   35.0   22.0   243   25.9 
2026-08-12 00:00 UT   07 16 31.9   +00 01 54     2.268    1.556   35.3   22.1   243   25.9 
2026-08-13 00:00 UT   07 18 52.2   +00 16 27     2.268    1.561   35.6   22.2   243   25.9 
2026-08-14 00:00 UT   07 21 11.9   +00 31 05     2.268    1.565   35.9   22.3   244   25.9 
2026-08-15 00:00 UT   07 23 30.8   +00 45 49     2.268    1.570   36.2   22.4   244   25.9 
2026-08-16 00:00 UT   07 25 49.1   -01 00 37     2.268    1.575   36.6   22.5   245   25.9 
2026-08-17 00:00 UT   07 28 06.8   -01 15 29     2.268    1.580   36.9   22.6   245   26.0 
2026-08-18 00:00 UT   07 30 23.8   -01 30 27     2.268    1.584   37.2   22.7   245   26.0 
2026-08-19 00:00 UT   07 32 40.2   -01 45 28     2.267    1.589   37.5   22.8   246   26.0 
2026-08-20 00:00 UT   07 34 55.9   -02 00 35     2.267    1.593   37.8   22.9   246   26.0 
2026-08-21 00:00 UT   07 37 11.0   -02 15 46     2.266    1.598   38.2   23.0   247   26.0 
2026-08-22 00:00 UT   07 39 25.4   -02 31 01     2.266    1.603   38.5   23.1   247   26.0 
2026-08-23 00:00 UT   07 41 39.2   -02 46 20     2.265    1.607   38.8   23.2   248   26.0 

    Terminology:
            
    delta:  distance between minor planet and earth in AU
    radius: distance between minor planet and sun in AU
    magn:   magnitude (brightness) estimate    
    ra:     right ascension in hours (24h = 360deg)
    dec:    declination in degrees
    elong:  elongation in degrees (angle sun-earth-minor planet)    
    phase:  phase angle in degrees (angle sun-minor planet-earth)        
    AU:     Astronomical Unit (mean distance between earth and sun: 149597870.7 km
    

Orbital elements provided by the MPC (Minor Planet Center).
Calculations by a modified version of AAPlus, a C# implementation of the AA+ project by PJ Naughter from the algorithms presented in the book "Astronomical Algorithms" by Jean Meeus.
NGC2000 dso catalog and star labels from VizieR as provided by the Strasbourg astronomical Data Center.
Tycho2 catalog from the ESO archive.